Improvement in flood-gates



1b all lwhen. it may oo nncera:

JOHN OAMVPBELL,l AND ADDISON WATSON, or LONDONQOHIO Latas mantra.101,659, daad september v27, 1870.

IMPROVEMENT iN-'FLooD-GATES.

` The Schedule referred to in these Letters Patent and making part' ofthe same.

Beit-known that we, .JOHN CAMPBELL and ADDI- 4son?W'Atrsorl, of London,in thecOnnty of Madison `and State of Ohio, have invented a new andvuseful Improvement in Flood-Gate;`and -we do hereby de- Glare that thefollowing is fa full and exact description ofthe same, reference beinghad to the accompanying drawing and to theletters of referencermarkedthereon. his invention' consists of aoOd-gate of peculiar construction,which is usedin connection with a chain and weight; Ehe details `ofconstrnctionaml manner of operation will be fully described'hereinafter.

In the drawingt l 4Figure l'represents a front elevation of in yimproved Hood-gate; and y y Figure 2, a transverse sectional elevationof the same. l l f To enable others skilled in the art'tomake and u'seour invention7 we will now proceed to describe fully its constructionand manner of operation.

A Arepresent two posts, which are rmly set into the earthnponeachsideofthe stream.

B represents the gate, which consist-s of the rollers b b l), securelyjournaledinthe gate-frame, andthe board b', asV shown. l l

The gateitself is alsosecurely journalcd in the posts A A'at itsloweredge, in such manner as tO swing out from the post at the top.

o represents a chain or rope, one end of' which is securely attached tothe gate-frame. l

This passes over -the roller @attached to one of the posts A, and hasattached to its free end a weight,

c2, as shown. l

The operation is as follows:

The stream of water, when low, passes through between therollers b b b.When, however, its volume is increased, the gate yields tothe pressure,and swinging out from the pos-ts, permits 'thellood to pass, the

rollersenabling any lmatter that might otherwise `bef caught, to pass:freely over them. As soon as the" extreme pressure is removed by thepassage ot'Y the flood the weight'draws the gate again to place.

it is not at all liableto get ont of order.

Having thus fnlly described onr invention, What we cla-im als new, anddesire to secure by Letters Patent, is-

The gate B, with rollers b -b and board b', when combined with thepostsA and used with the chain and weight, the parts being arranged asdescribed, for

the purpose set forth. y

This specification signed and witnessed this 3d day of May, 1870.

JOHN CAMPBELL. Witnesses: ADDISON WATSON.

WM. BLAKE,

B. BLAKE.

This gate may be easily constructed at small expense, and

